diascope

English

From dia- ‎ -scope.

diascope (plural diascopes)

A projector used for projecting transparencies.
- 1982, International Broadcast Engineer: IBE. - Volumes 181-196‎^[1]:
  The diascope test pattern reference for automatic setup is a transparency (Figure 3), built into all TK47B lenses.
- 2004, M. Vanaja, Methods Of Teaching Physics‎^[2], →ISBN, page 90:
  When it is used to project a slide then at serves as a diascope.
- 2010, Elizabeth A. Martin, A Dictionary of Science‎^[3], →ISBN, page 663:
  The diascope passes light through the two-dimensional object (such as a photographic transparency, slide, or film) and uses a converging projection lens to form an enlarged image on a distant screen.
a slide viewer, a device for looking at small transparent images.
(medicine) A flat piece of glass or transparent plastic, used to examine lesions in the skin
- 1898, “Cutaneous Tuberculosis by Auto-infection”, in Indiana Medical Journal‎^[4]:
  The diascope (a flat piece of glass) was used to press out the blood and expose the apple-jelly points of marginal growth.

First attested in the 20th century. From dia- ‎ -scope.

diascope m (plural diascopes)